Certain aspects of identification of the inhomogeneous prestressed state in thermoelastic bodies

2017 ◽  
Vol 81 (1) ◽  
pp. 71-76 ◽  
Author(s):  
A.O. Vatul’yan ◽  
S.A. Nesterov
Keyword(s):  
Prestressed State

Study on Stress and Strain of Anchorage Using Finite Element Method

2013 ◽  
Vol 325-326 ◽  
pp. 1314-1317
Author(s):  
Cong Sheng Chen ◽  
Ping He ◽  
Cheng Yong Wang ◽  
Xue Hui Chen ◽  
Lei Huang ◽  
...  
Keyword(s):  
Finite Element ◽  
Strain Distribution ◽  
Maximum Stress ◽  
Mechanical Response ◽  
Three Dimensional ◽  
Integrated Modeling ◽  
Stress And Strain ◽  
Steel Strand ◽  
Prestressed State ◽  
Stress And Strain Distribution

Three-dimensional integrated modeling method and the numerical simulation of elastoplastic finite element are adopted in the paper. The mechanical response of the five holes anchorage is analyzed in certain prestressed state. The stress and strain distribution information of the anchor ring, clip and steel strand is obtained respectively, and the structure safety is discussed by investigating on the maximum stress and strain.

The numerical solution of certain integral equations with non-integrable kernels arising in the theory of crack propagation and elastic wave diffraction

1969 ◽  
Vol 265 (1163) ◽  
pp. 353-381 ◽  
Keyword(s):  
Integral Equation ◽  
Elastic Wave ◽  
Numerical Solution ◽  
Wave Diffraction ◽  
Crack Surface ◽  
Relative Displacement ◽  
Method Of Solution ◽  
Set Up ◽  
Prestressed State ◽  
Numerical Method Of Solution

An infinite elastic medium is initially at rest in a prestressed state of plane- or anti-plane strain. At time t = 0 a plane crack comes into existence which occupies a strip parallel to the y axis and whose width varies in time. Assuming that the components of the traction are known on the crack surface it is possible to set up an integral equation on the area of the crack for the relative displacement across the crack. Although the kernel of this integral equation is non-integrable a method is found for discretizing it and a numerical method of solution is carried out. The results, which in some cases are the solutions of diffraction problems, are presented graphically.

Influence of the prestressed state of a medium on the fracturing effect of an explosion

1981 ◽  
Vol 17 (3) ◽  
pp. 251-256 ◽  
Author(s):  
V. P. Koryavov ◽  
V. M. Kuznetsov ◽  
V. I. Kulikov ◽  
L. D. Livshits
Keyword(s):  
Prestressed State

On Elastic Oscillations of a Thick-Walled Cylindrical Shell Subjected to Initial Finite Twist

1975 ◽  
Vol 42 (3) ◽  
pp. 712-715 ◽  
Author(s):  
A. Ertepinar ◽  
A. S. D. Wang
Keyword(s):  
Cylindrical Shell ◽  
Fundamental Frequency ◽  
Finite Elasticity ◽  
Numerical Results ◽  
Natural Vibrations ◽  
Elastic Deformations ◽  
Extended Theory ◽  
Rigorous Theory ◽  
Torsional Instability ◽  
Prestressed State

This paper is concerned with the natural vibrations of a rubber-like, thick-walled tube which is prestressed by an initial finite twist about the axis of the tube. The analysis is based on a rigorous theory of finite elasticity and the extended theory of small displacements superposed on large elastic deformations. Numerical results are obtained for tubes made of a neo-Hookean material. The fundamental frequency of the vibrations is found to depend on the prestressed state of the tube. In particular, when the tube becomes unstable under the initial twist, then the corresponding fundamental frequency ceases to be real-valued. When this happens, the problem becomes identical with that of torsional instability of similar tubes which was investigated earlier both analytically and experimentally.

scholarly journals HIGH RIGIDITY AND VIBRATION ENDURANCE BAR FOR DEEP HOLES

2021 ◽  
Vol 3 ◽  
pp. 62-65
Author(s):  
Evgenia Evgenieva ◽  
Igor Nikiforov ◽  
Pavel Maltsev ◽  
Sergey Dmitriev
Keyword(s):  
Boring Bar ◽  
High Rigidity ◽  
Prestressed State

Different constructions of bars are analyzed in the article, all of which are based on the idea of creating prestressed state in material. Improved construction of bar is proposed for equable spreading of elasticity zone along axis of boring bar.

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